This function allows the user to check TINY/SLIVER SURFACE, SURFACE BOUNDARY, CONTROL POINTS DISTRIBUTION, SPIKE/CUT SURFACE, SURFACE G0 CONTINUOUS and SURFACE G1 CONTINUOUS. The dialog box is illustrated in Figure 5.2.29.
Figure 5.2.29 Tiny/Sliver Surface Check
● TINY / SLIVER SURFACE
This function allows the user to check for tiny/sliver surface. The user can enter values in AREA and RATIO data fields to define tiny surface and sliver surface, as shown in Figure 5.2.29. The surfaces with area less than 0.1 square millimeters are defaulted to be tiny surfaces. Surfaces which ratio between surface area and surface perimeter is less than 0.04 are sliver surfaces. The program will highlight the tiny/sliver surfaces and display their surface numbers in the message window.
● SURFACE OVERLAP
This function allows the user to check overlap between surfaces. The user may enter values for DIST_TOL and OVER_TOL to define overlap. The default values are 0.2 and 0.05 as shown in Figure 5.2.30. Distance tolerance (Dist_Tol) indicates the shortest distance between overlap area and surface boundary. Overlap tolerance (Over_Tol) indicates the largest normal distance between overlap area and surface. The program will highlight the surface after check and display the surface number which will also be displayed in the message window.
Figure 5.2.30 Surface Overlap
● SURFACE BOUNDARY
This function allows the user to check whether there is self-intersection of surface boundary. The program will highlight the surfaces and display their surface numbers in the message window.
● CONTROL POINTS DISTRIBUTION
This function allows the user to check the distribution of control points in the surface. The program will highlight the surfaces and display their surface numbers in the message window.
● SPIKE / CUT SURFACE
This function allows the user to check for spike/cut surface. The user can enter DIST TOL and ANGLE TOL to define spike/cut surface. The defaults are 0.5 and 15, as shown in Figure 5.2.31. DIST TOL is the maximum distance between short edge and long edge. ANGLE TOL is the angle between two edges. The program will highlight the surfaces and display their surface numbers in the message window.
Figure 5.2.31 Spike / Cut Surface
● SURFACE G0 CONTINUOUS
This function allows the user to check the continuity of surface position. The user can enter GAP TOL to define the continuity surface position. The default is 0.5, as shown in Figure 5.2.32. The program will highlight the surfaces and display their surface numbers in the message window.
Figure 5.2.32 Surface G0 Continuous
● SURFACE G1 CONTINUOUS
This function allows the user to check Surface G1 Continuous. The user can enter GAP TOL and ANGLE TOL to define the continuity of surface G1. The defaults are 0.5 and 3, as shown in Figure 5.2.33. The ANGLE TOL is the angle between normal directions of surface at the common surface boundary. The program will highlight the surfaces and display their surface numbers in the message column.
Figure 5.2.33 Surface G1 Continuous
● ALL DISPLAYED SURFACES
This option is toggled on by default. All displayed surfaces will be checked. The user may click SELECT SURFACE button to define surfaces to be checked.
● ADD TO PART
This function allows the user to add the error surfaces to ERRSURF part created by the program automatically. The user can also change the default part name manually to create a new part.
● CHECK
Execute check operation.
● CLEAR
Clear the highlighted surfaces and surface numbers.